1 files changed, 327 insertions, 0 deletions
diff --git a/src/ui/widget/gradient-vector-selector.cpp b/src/ui/widget/gradient-vector-selector.cpp
new file mode 100644
index 0000000..ac6624c
--- /dev/null
+++ b/src/ui/widget/gradient-vector-selector.cpp
@@ -0,0 +1,327 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Gradient vector selection widget
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   MenTaLguY <mental@rydia.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2001-2002 Lauris Kaplinski
+ * Copyright (C) 2001 Ximian, Inc.
+ * Copyright (C) 2004 Monash University
+ * Copyright (C) 2004 David Turner
+ * Copyright (C) 2006 MenTaLguY
+ * Copyright (C) 2010 Jon A. Cruz
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ *
+ */
+
+#include "ui/widget/gradient-vector-selector.h"
+
+#include <set>
+
+#include <glibmm.h>
+#include <glibmm/i18n.h>
+
+#include "gradient-chemistry.h"
+#include "inkscape.h"
+#include "preferences.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "layer-manager.h"
+#include "include/macros.h"
+#include "selection-chemistry.h"
+
+#include "io/resource.h"
+
+#include "object/sp-defs.h"
+#include "object/sp-linear-gradient.h"
+#include "object/sp-radial-gradient.h"
+#include "object/sp-root.h"
+#include "object/sp-stop.h"
+#include "style.h"
+
+#include "svg/css-ostringstream.h"
+
+#include "ui/dialog-events.h"
+#include "ui/selected-color.h"
+#include "ui/widget/color-notebook.h"
+#include "ui/widget/color-preview.h"
+#include "ui/widget/gradient-image.h"
+
+#include "xml/repr.h"
+
+using Inkscape::UI::SelectedColor;
+
+void gr_get_usage_counts(SPDocument *doc, std::map<SPGradient *, gint> *mapUsageCount );
+unsigned long sp_gradient_to_hhssll(SPGradient *gr);
+
+// TODO FIXME kill these globals!!!
+static Glib::ustring const prefs_path = "/dialogs/gradienteditor/";
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+GradientVectorSelector::GradientVectorSelector(SPDocument *doc, SPGradient *gr)
+{
+    _columns = new GradientSelector::ModelColumns();
+    _store = Gtk::ListStore::create(*_columns);
+    set_orientation(Gtk::ORIENTATION_VERTICAL);
+
+    if (doc) {
+        set_gradient(doc, gr);
+    } else {
+        rebuild_gui_full();
+    }
+}
+
+GradientVectorSelector::~GradientVectorSelector()
+{
+    if (_gr) {
+        _gradient_release_connection.disconnect();
+        _tree_select_connection.disconnect();
+        _gr = nullptr;
+    }
+
+    if (_doc) {
+        _defs_release_connection.disconnect();
+        _defs_modified_connection.disconnect();
+        _doc = nullptr;
+    }
+}
+
+void GradientVectorSelector::set_gradient(SPDocument *doc, SPGradient *gr)
+{
+//     g_message("sp_gradient_vector_selector_set_gradient(%p, %p, %p) [%s] %d %d", gvs, doc, gr,
+//               (gr ? gr->getId():"N/A"),
+//               (gr ? gr->isSwatch() : -1),
+//               (gr ? gr->isSolid() : -1));
+    static gboolean suppress = FALSE;
+
+    g_return_if_fail(!gr || (doc != nullptr));
+    g_return_if_fail(!gr || SP_IS_GRADIENT(gr));
+    g_return_if_fail(!gr || (gr->document == doc));
+    g_return_if_fail(!gr || gr->hasStops());
+
+    if (doc != _doc) {
+        /* Disconnect signals */
+        if (_gr) {
+            _gradient_release_connection.disconnect();
+            _gr = nullptr;
+        }
+        if (_doc) {
+            _defs_release_connection.disconnect();
+            _defs_modified_connection.disconnect();
+            _doc = nullptr;
+        }
+
+        // Connect signals
+        if (doc) {
+            _defs_release_connection = doc->getDefs()->connectRelease(sigc::mem_fun(this, &GradientVectorSelector::defs_release));
+            _defs_modified_connection = doc->getDefs()->connectModified(sigc::mem_fun(this, &GradientVectorSelector::defs_modified));
+        }
+        if (gr) {
+            _gradient_release_connection = gr->connectRelease(sigc::mem_fun(this, &GradientVectorSelector::gradient_release));
+        }
+        _doc = doc;
+        _gr = gr;
+        rebuild_gui_full();
+        if (!suppress) _signal_vector_set.emit(gr);
+    } else if (gr != _gr) {
+        // Harder case - keep document, rebuild list and stuff
+        // fixme: (Lauris)
+        suppress = TRUE;
+        set_gradient(nullptr, nullptr);
+        set_gradient(doc, gr);
+        suppress = FALSE;
+        _signal_vector_set.emit(gr);
+    }
+    /* The case of setting NULL -> NULL is not very interesting */
+}
+
+void
+GradientVectorSelector::gradient_release(SPObject * /*obj*/)
+{
+    /* Disconnect gradient */
+    if (_gr) {
+        _gradient_release_connection.disconnect();
+        _gr = nullptr;
+    }
+
+    /* Rebuild GUI */
+    rebuild_gui_full();
+}
+
+void
+GradientVectorSelector::defs_release(SPObject * /*defs*/)
+{
+    _doc = nullptr;
+
+    _defs_release_connection.disconnect();
+    _defs_modified_connection.disconnect();
+
+    /* Disconnect gradient as well */
+    if (_gr) {
+        _gradient_release_connection.disconnect();
+        _gr = nullptr;
+    }
+
+    /* Rebuild GUI */
+    rebuild_gui_full();
+}
+
+void
+GradientVectorSelector::defs_modified(SPObject *defs, guint flags)
+{
+    /* fixme: We probably have to check some flags here (Lauris) */
+    rebuild_gui_full();
+}
+
+void
+GradientVectorSelector::rebuild_gui_full()
+{
+    _tree_select_connection.block();
+
+    /* Clear old list, if there is any */
+    _store->clear();
+
+    /* Pick up all gradients with vectors */
+    std::vector<SPGradient *> gl;
+    if (_gr) {
+        auto gradients = _gr->document->getResourceList("gradient");
+        for (auto gradient : gradients) {
+            SPGradient* grad = SP_GRADIENT(gradient);
+            if ( grad->hasStops() && (grad->isSwatch() == _swatched) ) {
+                gl.push_back(SP_GRADIENT(gradient));
+            }
+        }
+    }
+
+    /* Get usage count of all the gradients */
+    std::map<SPGradient *, gint> usageCount;
+    gr_get_usage_counts(_doc, &usageCount);
+
+    if (!_doc) {
+        Gtk::TreeModel::Row row = *(_store->append());
+        row[_columns->name] = _("No document selected");
+
+    } else if (gl.empty()) {
+        Gtk::TreeModel::Row row = *(_store->append());
+        row[_columns->name] = _("No gradients in document");
+
+    } else if (!_gr) {
+        Gtk::TreeModel::Row row = *(_store->append());
+        row[_columns->name] =  _("No gradient selected");
+
+    } else {
+        for (auto gr:gl) {
+            unsigned long hhssll = sp_gradient_to_hhssll(gr);
+            GdkPixbuf *pixb = sp_gradient_to_pixbuf (gr, _pix_width, _pix_height);
+            Glib::ustring label = gr_prepare_label(gr);
+
+            Gtk::TreeModel::Row row = *(_store->append());
+            row[_columns->name] = label.c_str();
+            row[_columns->color] = hhssll;
+            row[_columns->refcount] = usageCount[gr];
+            row[_columns->data] = gr;
+            row[_columns->pixbuf] = Glib::wrap(pixb);
+        }
+    }
+
+    _tree_select_connection.unblock();
+}
+
+void
+GradientVectorSelector::setSwatched()
+{
+    _swatched = true;
+    rebuild_gui_full();
+}
+
+void GradientVectorSelector::set_pixmap_size(int width, int height) {
+    _pix_width = width;
+    _pix_height = height;
+}
+
+} // namespace Widget
+} // namespace UI
+} // namespace Inkscape
+
+Glib::ustring gr_prepare_label(SPObject *obj)
+{
+    const gchar *id = obj->label() ? obj->label() : obj->getId();
+    if (!id) {
+        id = obj->getRepr()->name();
+    }
+
+    if (strlen(id) > 14 && (!strncmp (id, "linearGradient", 14) || !strncmp (id, "radialGradient", 14)))
+        return gr_ellipsize_text(id+14, 35);
+    return gr_ellipsize_text (id, 35);
+}
+
+/*
+ * Ellipse text if longer than maxlen, "50% start text + ... + ~50% end text"
+ * Text should be > length 8 or just return the original text
+ */
+Glib::ustring gr_ellipsize_text(Glib::ustring const &src, size_t maxlen)
+{
+    if (src.length() > maxlen && maxlen > 8) {
+        size_t p1 = (size_t) maxlen / 2;
+        size_t p2 = (size_t) src.length() - (maxlen - p1 - 1);
+        return src.substr(0, p1) + "…" + src.substr(p2);
+    }
+    return src;
+}
+
+
+/*
+ *  Return a "HHSSLL" version of the first stop color so we can sort by it
+ */
+unsigned long sp_gradient_to_hhssll(SPGradient *gr)
+{
+    SPStop *stop = gr->getFirstStop();
+    unsigned long rgba = stop->get_rgba32();
+    float hsl[3];
+    SPColor::rgb_to_hsl_floatv (hsl, SP_RGBA32_R_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_B_F(rgba));
+
+    return ((int)(hsl[0]*100 * 10000)) + ((int)(hsl[1]*100 * 100)) + ((int)(hsl[2]*100 * 1));
+}
+
+/*
+ * Map each gradient to its usage count for both fill and stroke styles
+ */
+void gr_get_usage_counts(SPDocument *doc, std::map<SPGradient *, gint> *mapUsageCount )
+{
+    if (!doc)
+        return;
+
+    for (auto item : sp_get_all_document_items(doc)) {
+        if (!item->getId())
+            continue;
+        SPGradient *gr = nullptr;
+        gr = sp_item_get_gradient(item, true); // fill
+        if (gr) {
+            mapUsageCount->count(gr) > 0 ? (*mapUsageCount)[gr] += 1 : (*mapUsageCount)[gr] = 1;
+        }
+        gr = sp_item_get_gradient(item, false); // stroke
+        if (gr) {
+            mapUsageCount->count(gr) > 0 ? (*mapUsageCount)[gr] += 1 : (*mapUsageCount)[gr] = 1;
+        }
+    }
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :